A leaked slide of Intel's nine-month solid state drive (SSD) roadmap shows a 400GB multi-level cell (MLC) enterprise solid state drive due in the first quarter of next year.
A French Mac website posted the apparently real slide on Sunday and it shows a transition to 25nm MLC process technology but not single level cell (SLC) …

SATA/SAS

Then use a suitable backplane for the disks. Use smarter backplanes in your rack, don't depend on the disk itself being smart (the failure might just as well be the disk logic board, not the software or silicon on your server)